51 | The Earth's magnetic field, snow, and Chernobyl 2011-04-07 |
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52 | Fish poo, dead whales, and the Japan earthquake 2011-03-23 |
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53 | Carbon capture and storage, floods, CryoSat-2 2011-03-09 |
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54 | Tracking insects with a Big Dish, Australian floods 2011-03-01 |
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55 | Romans recycling, dinosaur colour, gravity mission 2011-02-10 |
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56 | Noisy coral reefs, melting ice sheets and whale speak 2011-01-28 |
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57 | Essex coral reefs, malaria in the UK, and Antarctica 2011-01-12 |
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58 | An audio diary special edition 2011-01-05 |
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59 | Red squirrels and a tropical Antarctica 2010-12-09 |
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60 | Arctic Expedition Special 2010-12-07 |
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